baber/WOPTO huggingface dataset:
Patent GB-920623-A (GB)
Title: Substituted amino-alcohols
IPC: C07D303/22
Filed: 1961-02-08
Abstract: The invention comprises compounds of the formula <FORM:0920623/IV(a)/1> (in which R is hydrogen or methyl) and their acid-addition salts; and their preparation (1) by reducing a compound of the formula <FORM:0920623/IV(a)/2> (wherein R1 is hydrogen or a group readily replaceable by hydrogen such as an alkyl, aralkyl or acyl group and R11 is hydrogen or an aralkyl residue) and, if necessary, replacing R1 and R11 by hydrogen atoms; or (2) by reducing, in the presence of isopropylamine, a compound of the formula <FORM:0920623/IV(a)/3> and, if necessary, replacing R1 by a hydrogen atom; or (3) by reacting a compound of the formula <FORM:0920623/IV(a)/4> with the amine R11-NH-CH(CH3)2 and, if necessary, replacing R1 and R11 by hydrogen; or (4) by isopropylating a compound of the formula <FORM:0920623/IV(a)/5> (obtainable by reduction of the corresponding isonitroso ketone or by acid-splitting of an appropriate oxazolidone-2 compound) and, if necessary, replacing R1 by hydrogen.  The last named process may be effected by condensing the amine with acetone and reducing the resulting Schiff's base.  The compounds of the invention may be resolved into their optical isomers, for example by fractional crystallization of optically active salts with optically active acids.  Examples are given, and a list of salt-forming organic and inorganic acids is provided.  1 - (3,5 - Dialkoxyphenyl)-1-oxo-2-isopropyl-amino-ethanes or propanes are prepared from isopropylamine and the appropriate halogenoethane or -propane.  In an example 1-(3,5-dimethoxyphenyl) - 1 - oxo-2-isopropylamino-propane hydrochloride is so prepared and is then demethylated to 1-(3,5-dihydroxyphenyl)-1 - oxo - 2 - isopropylamino - propane hydrobromide.  3,5-Dimethoxyphenyl-glyoxal is prepared by heating 3,5 - dimethoxy - acetophenone with selenium dioxide.  3,5-Dimethyoxyphenyl-ethylene oxide is prepared by reducing 3,5-dimethoxy-o -bromo-acetophenone to give 1-(3,5-dimethoxyphenyl)-1-hydroxy-2-bromo-ethane and then treating this with alcoholic potassium hydroxide.  Compounds of the first general formula above and their salts, which are stated to have a good broncholytic effect, may be formulated as pharmaceutical compositions, in combination with carriers or excipients for oral, nasal, rectal or parenteral administration.  The compositions may take the form of suspensions, emulsions, syrups, powders, tablets, capsules, dragees, sprays, inhalations, suppositories or injectable solutions, and may contain a tabletting adjuvant, flavouring, suspending or dispersing agents, sterile pyrogen free water, oil or oil emulsions or suppository bases.
Patent GB-192931-A (GB)
Title: Improvements relating to yarn twisting frames
IPC: D01H1/42
Filed: 1922-02-18
Abstract: 192,931. Barbour, W. T., and Suffern, W. S. Feb. 18, 1922. Rollers and roller heads; thread guides.-In a yarn twisting-frame, each set of single yarns is carried around one or more pulleys A, which are grooved to accommodate the individual yarns and are freely mounted on axles a, as shown in Fig. 1. When ordinary flyers and dragged bobbins are employed, the pulleys A are mounted on driven axles, or a single pulley may be mounted in the water trough behind ordinary rollers as shown in Fig. 4.
Patent GB-329294-A (GB)
Title: Improvements in or relating to diaphragms for acoustic instruments
IPC: H04R7/12
Filed: 1929-02-13
Abstract: 329,294. Elliott, M. E. Feb. 13, 1929. Diaphragms.-An acoustic diaphragm is made thicker near its centre than at the edge, the variation in thickness being such that the weights of concentric rings of given width are substantially the same at all distances from the centre except in the immediate neighbourhood of the latter. In the construction shown in Fig. 2, the two surfaces are formed by the revolution of a hyperbola and one asymptote about the other asymptote. In other modifications (Figs. 3 and 4. not shown) the surfaces are respectively formed by the revolution of two congugate hyperbolae lying on the same side of an asymptote, about that asymptote, and of two congugate rectangular hyperbolae about a common asymptote.
Patent GB-946873-A (GB)
Title: New steroid compounds, and processes for the preparation thereof
IPC: C07J1/00
Filed: 1961-02-09
Abstract: The invention comprises 2-Methoxy-11 b -hydroxy-androsta-1, 4-dien-3, 17-dione and a process for the production thereof in which 1, 2, 11 b -trihydroxy-androst-4-ene-3,17-dione is dehydrated in the presence of an alkali metal condensation agent to yield the corresponding alkali metal enolate of the formula: <FORM:0946873/C2/1> and this latter compound is methylated to form 2-methoxy-11 b -hydroxy-androsta-1, 4 - diene - 3, 17-dione. Dehydration may be effected with sodium methylate and methylation with sodium iodide. The starting 1, 2, 11 b -trihydroxy-androst-4-ene-3,17-dione may be obtained by subjecting 11 b -hydroxy-androsta-1, 4-diene-3, 17-dione to oxidation. Specification 946,874 is referred to.
Patent GB-871817-A (GB)
Title: Brushing means for washing vehicles
Inventor: SMITH OLIVER DOUGLAS
IPC: B60S3/06
Filed: 1959-02-12
Abstract: 871,817. Brushes. SMITH BROS. & WEBB Ltd. April 21, 1960 [Feb. 12, 1959], No. 4898/59. Addition to 769,423. Class 19. The rotatable brush for washing vehicles as described in the parent Specification is modified in that the lower of the axially spaced rotor discs 2-6 between which the brush units are secured are of smaller diameter than the rest of the discs so that the axially configuration of the brush is sinusoidal, being uncurved at the lower end of the brush.
Patent GB-265784-A (GB)
Title: Improvements in lifting mechanism for the windows of vehicles
IPC: E05F11/38
Filed: 1926-02-20
Abstract: 265,784. Buch, M. A. Feb. 20, 1926. Vehicle - window opening and closing apparatus.-The window is operated by a lever 12 and a pair of parallel levers 10, 11, pivotally connected thereto and to a mounting bracket 4, one of the latter levers being connected to the crank 18 by a link 19. A balancing spring may be connected to the lever 10. The window is adapted to be completely raised or lowered bv one half turn of the crank handle. Stops 23 may be provided for the crank positions corresponding to the opened and closed window and these may be disposed to give a locking effect with the crank beyond the dead centre. A brake, such as a wedging device acting on a disc fixed to the handle spindle, may be provided to hold the window in any position. The mechanism may be assembled on the bracket 4 prior to mounting. A counterbalancing volute spring may be provided on the crank-spindle.
Patent GB-298434-A (GB)
Title: Improvements in or relating to the manufacture of phonographic records or disks
Filed: 1928-02-16
Abstract: 298,434. Laffon, H. Feb. 16, 1928. Records, blanks for.-Disc records are constructed with a foundation layer and coating layers all containing cellulose ester, the foundation layer also containing a plasticizing agent and also, if desired, a condensation product and a filler. The foundation layer, which is of a yielding nature, comprises cellulose ester, a plasticizing agent such as resinic ether, ethyl phthalate, triphenyl phosphate, diphenyl ethyl phosphate, &c., and if desired a condensation product of furfurol, naphthol, pitch, or resin, and with or without a filler, such as pasteboard, wood fibre, &c., and a pigment. This layer is coated on both sides with a hard layer composed of cellulosic varnish alone or mixed with a filler and a pigment, if desired. Labels, designs, or texts may be applied or impressed on the foundation layer before applying a transparent surface layer or layers. In a method of making cheap discs, paper is coated on one side with a composition of cellulose esters and on the other with the composition to form the internal layer, two such discs being pressed together under heat with the condensation product surfaces in contact, whereby the paper becomes impregnated with the product. This pressing may be effected by the matrices in producing the record. Various compositions for the foundation layer, and also a composition for the surface layer, are given in the Specification. Specification 222,177 is referred to.
Patent GB-753863-A (GB)
Title: Improvements in or relating to fmí¬am receiving circuit-arrangements
IPC: H03D5/00
Filed: 1954-02-19
Abstract: 753,863. Frequency and amplitude modulation receivers; limiter circuits. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Feb. 19, 1954 [Feb. 24, 1953], No. 4961/54. Classes 40 (5) and 40 (6). In an FM-AM receiver having for FM reception a ratio detector 4, 5 rendered inoperative during AM reception, e.g. by switching a large resistor 13 in the lead to the large capacitor 9 of the RC filter 8, 9, a noise limiter diode 16 and resistor 17 are connected in series between a tapping of the resistor 8 and capacitor 9, and the demodulated A M  wave is derived across the resistor 17 (shunted by a capacitor 18) with interference on the AM wave limited by the diode (normally conductive but non- conducting during interference) to a level determined by the negative bias built up on the capacitor 9. The demodulated AM wave is taken from the AM terminal via a capacitor and potentiometer as shown, and AVC or negative bias for succeeding AF stages may also be taken from the capacitor 9 through a resistor 20. A resistor 10 is in series with the large capacitor 9 to improve the amplitude modulation rejection and a small capacitance 14 may shunt the resistor 8. The input of the ratio detector comprises two coupled tuned circuits 2, 3, a coil 7 tightly coupled to the first circuit 2, and in series with the coil 7 a resistor and capacitor 6 across which the demodulated FM wave is obtained.
Patent GB-1104216-A (GB)
Title: One-shot multivibrator circuit
IPC: H03K5/00
Filed: 1966-02-04
Abstract: 1,104,216. Transistor switching circuits. NATIONAL CASH REGISTER CO. 4 Feb., 1966 [18 Feb., 1965], No. 5027/66. Heading H3T. A monostable circuit includes a first transistor 20 having its collector connected to the base of a second transistor 32 and to the common point 18 of a capacitor 40 and a resistor 34, 36 connected in series between two reference potentials, and a third transistor 56 having its emitter connected to the emitter of the second transistor 32 and through a resistor 54 to a reference potential and its base connected to a substantially constant potential level, transistors 20, 56 being normally non-conductive, transistor 32 being normally conductive and the capacitor being normally charged, transistor 20, when rendered conductive by an input pulse at 12, providing a discharge path for capacitor 40 and causing transistor 32 to be rendered non-conductive and remaining non-conductive after the termination of the input pulse until capacitor 40 is charged to a sufficient level through resistor 34, 36. Output pulses may be taken from point 42 but, as shown, the switching of transistors 20, 32, 56 by the input pulse causes transistor 78 to become non-conductive and providing an output at 84. The circuit may be re-triggered by a further input pulse before the termination of the output pulse, the effect being to discharge capacitor 40 and hence delay the termination of the output pulse. Level shifting Zener diode 72 may be replaced by a resistor.
Patent GB-398829-A (GB)
Title: Improvements in electric gaseous discharge lamps
IPC: H01J61/70
Filed: 1932-02-19
Abstract: 398,829. Discharge lamps. LEDERER, A., Hermesvilla, Vienna. Feb. 19, 1932, No. 5061. Convention date, Feb. 20, 1931. [Class 39 (i).] Direct-current electric gaseous discharge lamps of the kind described in Specifications 364,088 and 371,372, wherein one or more heated, electron - emissive electrodes in an atmosphere-of a rare gas or gases produce an intense core light or aureole adjacent to and all around the hot electrode or electrodes, and a feebler lighting outer zone or shell, the anode is formed of rods or wire so as to have a small total surface area and surrounds the electron-emissive electrode or its imaginary extension so as to provide a substantially uniform, or at least symmetrical, electric field around the electron-emissive electrode. In one form the anode 10, Fig. 1, consists of a wire arranged as a helix with its axis substantially coincident with the axis of the tubular hot cathode 2, a wire 17 serving as a support for the wire helix. The hot cathode 2 consists of a nickel tube with a thermionic active coating and a heating filament 3 passing through the interior, the lower end of the filament being connected to a leading in wire 4 and the upper end connected through the anode to the other leading-in wire 5. The tube 2 is closed at its ends by stoppers 6, 7 of refractory insulating material which have a central aperture for the passage of the wire 3. A clamp 8 supports the tube 2 on the supporting wire 4, and an oblique wire 9 secured to the latter forms a strut for supporting the lower stopper 6. An insulator may be interposed between the tube 2 and the heating filament. In a modification the anode forms a cage consisting of parallel wires or rods arranged parallel to the axis of the hot electrode, with their ends connected by annular conductors. Two rods only arranged in the same plane and equidistant from the hot electrode may, in some instances, produce the symmetrical field. In a further modification, the anode 14, Fig. 3, consists of an annular wire arranged within the neck of the bulb to encircle the mount 15.
Patent GB-194522-A (GB)
Title: Improvements in or relating to electrically controlled direction indicators for vehicles
IPC: G08B5/28
Filed: 1922-02-21
Abstract: 194,522. Watts, F. H. Feb. 21, 1922. Three-position indicators.-A stopping and turning indicator for vehicles comprises an indicator d adapted to be swung by an armature b pivoted between the adjacent arms of two V- shaped electromagnets e, f. Normally, the indicator is locked by a recess in an armature j engaging a projection on the armature b. When one of the coils is energized, the armature is attracted at one end, thus releasing the armature b and allowing the indicator to move into its signalling position. For use at night the indicator is either made luminous by paint, or lamps are provided the circuits of which are closed by contacts mounted on the armature j. Where a heavy indicator is used, additional coils p, q are provided. The indicator may comprise a metal arrow or a dark-coloured disc inlaid with a glass arrow. The Provisional Specification states that the movement of the indicator may be " deadbeat. "
Patent GB-726910-A (GB)
Title: Improvements relating to reduction of noise emission from electromagnetic apparatus
Inventor: ENNIS ARTHUR SAMUEL
IPC: H01F27/38
Filed: 1952-02-27
Abstract: 726,910. Changing wave shape. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Jan. 27, 1953 [Feb. 27, 1952], No. 5155/52. Class 38 (2). To reduce the noise produced by electromagnetic apparatus such as transformers and reactors, the noise producing harmonics of the periodically varying flux are reduced or removed by applying to a main or auxiliary winding, auxiliary voltages which cause the circulation of current having the frequency, phase and magnitude required to counteract such flux harmonics. These voltages may be derived from alternators driven by a synchronous motor, and having separate phase and magnitude controls, from amplified outputs of tape recording machines, from saturable transformers or from electronic oscillators.
Patent GB-469434-A (GB)
Title: Improvements in the hydrogenation of esters of carboxylic acids
IPC: C07C29/149
Filed: 1936-02-20
Abstract: Alcohols are obtained by hydrogenating esters under pressure at 200--400 DEG  C., using a catalyst consisting of cobalt oxide and silver oxide and/or silver.  Examples relate to the treatment of palm oil, coconut oil, and butyl stearate.  Specification 356,731 is referred to.ALSO:Alcohols are obtained by hydrogenating esters under pressure at 200--400 DEG  C., using a catalyst consisting of cobalt oxide and silver oxide and/or silver.  Examples relate to the treatment of palm oil, cocoanut oil, and butyl stearate. Specification 356,731 is referred to.
Patent GB-957701-A (GB)
Title: Improvements relating to the drying or dehydrating of leather or untanned pelt
Inventor: DRAPER ALFRED JOHN MONTFORT
IPC: C14C7/00
Filed: 1962-02-09
Abstract: Leather or pelts are dried by being impregnated, e.g. by tumbling, with a liquid forming an azeotrope with the water contained in them, and with a softening liquid, and then removing the azeotrope, e.g. by drying in a current of warm air.  Suitable azeotrope-forming liquids preferably have boiling points above 100  DEG C. and include diacetone alcohol, benzyl alcohol, furfural and pyridine.  As softeners, paraffin oil, kerosene petroleum distillates (special boiling) and other volatile hydrocarbons may be used.  The softener may incorporate dyes, fats or oils, and is preferably immiscible with the azeotrope-forming liquid.
Patent GB-301677-A (GB)
Title: Improvements in two-stroke internal-combustion engines
IPC: F02B19/00
Filed: 1928-02-18
Abstract: 301,677. Silvestri, G., and Pedrotti, D. Feb. 18, 1928. Cylinders receiving liquid fuel. - In a twostroke-cycle engine the common combustion chamber 3 is connected to the cylinders 1 by passages 2, the shaft 28 being placed between the cylinder. The combustion chamber is conical and has interchangeable liners 25 to vary its volume. On the side of the chamber remote from the cylinders is or are mounted an annular valve 7 or a number of valves for scavenging air. On the same side of the chamber is an unjacketed vaporizer head 4 connected through a valved passage 9 to a fuel receiving vessel 5. The terminal exhaust ports 16 deliver into channels 13 and an exhaust pipe 30. At the end of the expansion stroke the flow of the exhaust causes a depression within the cylinders and combustion chamber; the valve or valves 7 open automatically .and air flows in. At the commencement of the return stroke of the pistons the valve 8 is opened through the linkage 19, 20, 21 by a cam 18 on the gudgeon; fuel then flows into the head 4 being directed upwardly bv the shape of the passage 9. It is heated in this head and mixed with some of the scavenging air compressed on the return stroke of the piston; the head is not scavenged, a small part of the products of the previous cycle being driven in front of the incoming fuel. An igniter 27 is placed in the head. Liquid fuel may be supplied to the vessel 5 through the opening 11 and delivered to the vaporizer by air supplied at the opening 12.
Patent GB-929685-A (GB)
Title: Resilient sheet metal fastener for securing a stud to an apertured support
Inventor: STRANGE JOHN
IPC: G09F7/18
Filed: 1961-02-13
Abstract: 929,685. Shearing. SIMMONDS AEROCESSORIES Ltd. Feb. 2, 1962 [Feb. 13, 1961], No. 5258/61. Class 83 (4). [Also in Group XXV] A one-piece sheet metal fastener (see Group XXV) is formed from a blank by a punch 18 and a die 19, the punch having a cross-sectioned shape corresponding to the shape of slots 9 in the blank and the die having a cavity 20 shaped to receive the punch and having a recess 21 to allow metal in the region of the points of the slots to be deformed out of the plane of the blank so as to form barbs. In another form the punch is formed with a shoulder 22 corresponding to the recess 21 in the die.
Patent GB-690651-A (GB)
Title: Improvements in or relating to a pipe coupling for an earth boring unit
IPC: E21B17/046
Filed: 1951-03-05
Abstract: 690,651. Pipe couplings. KANDLE, C. W. March 5, 1951. No. 5294/51. Class 99 (i). Pipes 1, forming an earth boring unit rotated by a motor, are coupled together, e.g. successively, by cylindrical members 2 inside the pipes and pins 8 the lengthwise displacement of which is prevented by resilient means such as spring-loaded balls 10 secured in the members and engaging in grooves 9 of the pins. The ends of the pins are flush with the outer surfaces of the pipes. Each member 2 may be provided with a square head 5 for engagement in a driving socket of the motor.
Patent GB-1241322-A (GB)
Title: Improvements relating to electrode mounting
Inventor: ALLEN ALEC GEORGE
IPC: H05B7/101
Filed: 1968-02-01
Abstract: 1,241,322. Mountings of electrodes. ASSOCIATED ELECTRICAL INDUSTRIES Ltd., and KAYSER ELLISON & CO. Ltd. 3 Feb., 1969 [1 Feb., 1968], No. 5308/68. Heading H5H. A mounting for an electrode 9 used in arc furnaces or in electroslag remelting incorporates a ball joint permitting lateral angular movement of the electrode in any direction together with means for locking the ball joint in any position to which the electrode can be so moved, e.g. four locking screws 5 extending into the ball-joint housing 1 through tapped holes being used to engage a portion of the member 4 which has a part-spherical surface co-operating with a supporting hemispherical seating 3 to form the ball joint. A further portion of member 4 is secured to an intermediate member 6 attached by a bolted or clamped joint 7 to a demountable end member 8 to which the electrode 9 is attached by welding or by casting around a grooved end as shown. Copper braid or other flexible conductors 10 are connected from the housing 1 to the intermediate member 6 or to member 8 if the intermediate member 6 is omitted, the conductors offering a preferential current path round the ball joint. An electrode supporting clamp (not shown) engages spigot 2 which is centrally or eccentrically located on plate 11.
Patent GB-163780-A (GB)
Title: Improvements in apparatus for loading and unloading vehicles
IPC: B60P1/64
Filed: 1920-02-23
Abstract: 163,780. Dew, E. H. Feb. 23, 1920. Vehicle fittings and attachments.-Guiding tracks, secured to motor road vehicles and their tender vehicles or the like, for receiving demountable load-carrying trucks, are provided at one or both ends with short bridging tracks adapted to connect the tracks on the vehicle whether they are aligned or not, and the trucks are provided with three or more pairs of wheels carried on vertical pivots, the central pair or pairs having lateral movement also. The vehicle tracks are formed of angle-irons c, c<1> and the bridging-pieces f<3> are hinged on horizontal bolts e<3>, and on vertical pivots e, and are controlled by the handle f<3>, Fig. 11, of a rod f<7> . All track ends are splayed out as at f<9> and c<5>. The wheels of the truck are mounted in a U-shaped member pivoted at h<3>, Fig. 6, in a plate which for outer pairs is secured to the truck, but for inner pairs is permitted lateral movement on wheels h<17> mounted in bearings h<18> on the plate. The truck may be secured against vertical and horizontal movement by catches s and k' respectively. A winch t' may be mounted on the vehicle and rings g<14> on the truck to facilitate hauling.
Patent GB-248739-A (GB)
Title: Improvements in electron discharge apparatus
IPC: H03B5/10
Filed: 1926-02-25
Abstract: 248,739. British Thomson-Houston Co., Ltd., (Assignees of Warner, J. C.). March 5, 1925, [Convention date]. Thermionic generators.-In order to reduce internal losses in a thermionic oscillator of the four-electrode type, the potential applied to the spacecharge grid is caused to vary rhythmically with the current pressure through an oscillatory current associated with the anode and control-electrodes instead of remaining at a constant positive potential value. As shown in Fig. 1, the main oscillatory circuit comprises inductances 6, 7 and capacities 8, 9 connected between the plate 3 and the usual control grid 4. A coil 11 connects the space-change grid 5 to the cathode 2 and is variably coupled to the inductance 6. In this way a positive charge is induced on the grid 5 when maximum current is flowing, tending to reduce the plate impedance. When the current is low, the space-charge grid becomes negative and does not absorb any power. A signalling key 17 may be inserted in the circuit of the space-charge grid as shown. The positions of the two grids 4, 5 relative to the cathode may be interchanged. The load circuit 10 mav constitute the main oscillatory circuit and be coupled to the plate and to both of the grid circuits.